[R-pkg-team] Bug#921211: r-cran-natserv: testing migration blocked by autopkgtest regression

[Adrian Bunk]

Source: r-cran-natserv
Version: 0.3.0+dfsg-1
Severity: serious

https://ci.debian.net/packages/r/r-cran-natserv/unstable/amd64/

...
autopkgtest [20:57:22]: test run-unit-test: [-----------------------
BEGIN TEST test-all.R

R version 3.5.2 (2018-12-20) -- "Eggshell Igloo"
Copyright (C) 2018 The R Foundation for Statistical Computing
Platform: x86_64-pc-linux-gnu (64-bit)

R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under certain conditions.
Type 'license()' or 'licence()' for distribution details.

R is a collaborative project with many contributors.
Type 'contributors()' for more information and
'citation()' on how to cite R or R packages in publications.

Type 'demo()' for some demos, 'help()' for on-line help, or
'help.start()' for an HTML browser interface to help.
Type 'q()' to quit R.

> library("testthat")
> test_check("natserv")
Loading required package: natserv
Error in library("vcr") : there is no package called 'vcr'
Calls: test_check ... source_dir -> lapply -> FUN -> eval -> eval -> library
Execution halted
autopkgtest [20:57:23]: test run-unit-test: -----------------------]
autopkgtest [20:57:23]: test run-unit-test:  - - - - - - - - - - results - - - - - - - - - -
run-unit-test        FAIL non-zero exit status 1
autopkgtest [20:57:23]: @@@@@@@@@@@@@@@@@@@@ summary
run-unit-test        FAIL non-zero exit status 1